The file is processed top down therefore the last line that has successfully started precedes the component that is causing the delay. Once you know the class that is slow to load you can start tracing it with log4j. If unsure of what to log start a logger on everything. In almost all cases it will be the ServiceModelListener and the resolution is truncate checkopint tables or leave it to catch up. Logging output is the only way you'll know how long to wait.

Can you please open a support call and provide the EventDatabaseListener.xml and JDBCMap.xml in your installation. WIth a support call open, we can temporarily work around this issue and get you up and running until a permanent fix is found